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John Koleszar authored
Add a new encoder control, VP8E_SET_TUNING, to allow the application to inform the encoder that the material will benefit from certain tuning. Expose this control as the --tune option to vpxenc. The args helper is expanded to support enumerated arguments by name or value. Two tunings are provided by this patch, PSNR (default) and SSIM. Activity masking is made dependent on setting --tune=ssim, as the current implementation hurts speed (10%) and PSNR (2.7% avg, 10% peak) too much for it to be a default yet. Change-Id: I110d969381c4805347ff5a0ffaf1a14ca1965257
b0da9b39
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/*!
\page portingqmlapp.html
\title Porting QML Applications to Qt 5 Example
\brief Provides step-by-step instructions to port a QML application to Qt 5.
The new version of Qt Quick in Qt 5 brings in some changes to the way QML
applications are developed. For the complete list of changes that affect
existing QML applications, refer to \l{Porting QML Applications to Qt 5}.
This topic will walk through the porting process to make the \c{flickr} Qt 4
QML demo work on Qt 5. If you have the SDK based on Qt 4.8 installed, you can
find this demo application under
\c{<install_dir_root>/Examples/4.x/declarative/demos/}.
Follow these step-by-step instructions to port the \e{flickr} Qt 4 QML
application work to Qt 5:
\list 1
\li Open the \e{flickr} project using Qt Creator.
\li Edit all the \c{.qml} files and replace the \c{import QtQuick 1.0} statements
with \c{import QtQuick 2.0}.
\li Add the additional \c{import QtQuick.XmlListModel 2.0} statement to
\c{qml/common/RssModel.qml}.
\note \l{Qt Quick XmlListModel QML Types}{XmlListModel} is part of a
submodule under \l{QtQuick} and it must be imported explicitly in order
to use it.
\li Make the following changes to
\c{qmlapplicationviewer/qmlapplicationviewer.h}:
\list
\li Replace the \c{#include <QtDeclarative/QDeclarativeView>} with
\c{#include <QQuickView>}.
\li Replace \c{QDeclarativeView} with \c{QQuickView} in the class
declaration for \c{QmlApplicationViewer}.
\li Replace the parameter for \c{QmlApplicationViewer} constructor from
\c{QWidget} to \c{QWindow}.
\endlist
\li Make the following changes to
\c{qmlapplicationviewer/qmlapplicationviewer.cpp}:
\list
\li Replace all the \c{QtCore} and \c{QtDeclarative} include statements with
these:
\code
#include <QCoreApplication>
71727374757677787980818283848586878889909192939495
#include <QDir>
#include <QFileInfo>
#include <QQmlComponent>
#include <QQmlEngine>
#include <QQmlContext>
#include <QDebug>
\endcode
\li Replace all instances of \c{QWidget} with \c{QWindow}, and
\c{QDeclarativeView} with \c{QQuickView}.
\li Remove the code between \c{#if defined(Q_OS_SYMBIAN)} and \c{#endif}
macros as Symbian platform is not supported in Qt 5.
\li Remove the code between \c{#if QT_VERSION < 0x040702} and \c{#else}, and
\c{#endif // QT_VERSION < 0x040702} macros towards the end.
\endlist
\li Save changes to the project and run the application.
\endlist
Once you see the application running, check whether it behaves as expected. Here is a
snapshot of the application running on Ubuntu v12.04:
\image flickr_application.png
\section1 Related Topics
\l{Porting QML Applications to Qt 5}
*/